scholarly journals Room-temperature film formation of metal halide perovskites on n-type metal oxides: the catalysis of ZnO on perovskite crystallization

2018 ◽  
Vol 54 (50) ◽  
pp. 6887-6890 ◽  
Author(s):  
Zhongcheng Yuan ◽  
Sai Bai ◽  
Zhibo Yan ◽  
Jun-Ming Liu ◽  
Feng Gao
Keyword(s):  
Metal Oxides ◽  
Thermal Annealing ◽  
Room Temperature ◽  
Crystallization Process ◽  
Film Formation ◽  
Metal Halide ◽  
Halide Perovskites

The ZnO/perovskite interface can efficiently catalyse the perovskite crystallization process even without thermal annealing.

Nanocrystals of Metal Halide Perovskites and Their Analogues as Scintillators for X-ray detection

Nano Futures ◽  
2021 ◽  
Author(s):  
Huiwen Chen ◽  
Yunlong Li ◽  
Bo Zhao ◽  
Jun Ming ◽  
Dongfeng Xue
Keyword(s):  
Homeland Security ◽  
Quantum Confinement ◽  
Room Temperature ◽  
Quantum Confinement Effect ◽  
Medical Diagnostics ◽  
Metal Halide ◽  
Large Area ◽  
X Ray ◽  
Industrial Inspection ◽  
Halide Perovskites

Abstract Scintillators are widely used for X-ray detection in various fields, such as medical diagnostics, industrial inspection and homeland security. Nanocrystals of metal halide perovskites and their analogues showed great advantages as X-ray scintillators due to their cheap manufacturing, fast decay time, and room temperature scintillation from quantum confinement effect. However, there are still many challenges unsolved for further industrialization. Herein, it is necessary to summarize the progress of scintillators based on nanocrystals of metal halide perovskites and their analogues. In first section, the scintillation mechanism and key parameters are outlined. Then, various nanocrystals of metal halide perovskites and their analogues used as scintillators are reviewed. Finally, the challenges and outlook are discussed. It is believed that nanocrystals of metal halide perovskites and their analogues are favorable for large-area and flexible X-ray detectors.

scholarly journals Using steric hindrance to manipulate and stabilize metal halide perovskites for optoelectronics

2021 ◽  
Author(s):  
Yanfeng Miao ◽  
Yuetian Chen ◽  
Haoran Chen ◽  
Xingtao Wang ◽  
Yixin Zhao
Keyword(s):  
Steric Hindrance ◽  
Film Formation ◽  
Metal Halide ◽  
Halide Perovskites ◽  
Kinetics Of

Manipulation on steric hindrance can influence the fundamental kinetics of perovskite crystallization and film formation, therefore stabilizing and passivating perovskite structures, and promoting the commercialization of stable perovskite devices.

scholarly journals Impact of Processing on Structural and Compositional Evolution in Mixed Metal Halide Perovskites during Film Formation

2020 ◽  
Vol 30 (38) ◽  
pp. 2001752 ◽  
Author(s):  
Maged Abdelsamie ◽  
Junwei Xu ◽  
Karsten Bruening ◽  
Christopher J. Tassone ◽  
Hans‐Georg Steinrück ◽  
...  
Keyword(s):  
Film Formation ◽  
Metal Halide ◽  
Mixed Metal ◽  
Compositional Evolution ◽  
Halide Perovskites

scholarly journals Room-temperature random lasing of metal-halide perovskites via morphology-controlled synthesis

2020 ◽  
Vol 2 (12) ◽  
pp. 5833-5840
Author(s):  
Yu-Heng Hong ◽  
Tsung Sheng Kao
Keyword(s):  
Room Temperature ◽  
Metal Halide ◽  
Controlled Synthesis ◽  
Film Morphology ◽  
Optical Performance ◽  
Random Lasing ◽  
Structural Configuration ◽  
Metal Halide Perovskite ◽  
Halide Perovskites ◽  
Halide Perovskite

Film morphology and the corresponding structural configuration can profoundly affect the optical performance, especially the random lasing action in organic–inorganic metal-halide perovskite thin films.

scholarly journals Ultrafast correlated charge and lattice motion in a hybrid metal halide perovskite

2019 ◽  
Vol 5 (5) ◽  
pp. eaaw5558 ◽  
Author(s):  
Yang Lan ◽  
Benjamin J. Dringoli ◽  
David A. Valverde-Chávez ◽  
Carlito S. Ponseca ◽  
Mark Sutton ◽  
...  
Keyword(s):  
Room Temperature ◽  
Longitudinal Optical ◽  
Metal Halide ◽  
Thz Spectroscopy ◽  
Time Resolved ◽  
Carrier Lifetimes ◽  
Metal Halide Perovskite ◽  
Coherent Coupling ◽  
Halide Perovskites ◽  
Correlated Motion

Hybrid organic-inorganic halide perovskites have shown remarkable optoelectronic properties, exhibiting an impressive tolerance to defects believed to originate from correlated motion of charge carriers and the polar lattice forming large polarons. Few experimental techniques are capable of directly probing these correlations, requiring simultaneous sub–millielectron volt energy and femtosecond temporal resolution after absorption of a photon. Here, we use time-resolved multi-THz spectroscopy, sensitive to the internal excitations of the polaron, to temporally and energetically resolve the coherent coupling of charges to longitudinal optical phonons in single-crystal CH3NH3PbI3 (MAPI). We observe room temperature intraband quantum beats arising from the coherent displacement of charge from the coupled phonon cloud. Our measurements provide strong evidence for the existence of polarons in MAPI at room temperature, suggesting that electron/hole-phonon coupling is a defining aspect of the hybrid metal-halide perovskites contributing to the protection from scattering and enhanced carrier lifetimes that define their usefulness in devices.

Stable down-conversion white light-emitting devices based on highly luminescent copper halides synthesized at room temperature

2021 ◽  
Author(s):  
Lintao Wang ◽  
Zhuang zhuang Ma ◽  
Fei Zhang ◽  
Meng Wang ◽  
Xu Chen ◽  
...  
Keyword(s):  
Solid State ◽  
White Light ◽  
Room Temperature ◽  
Metal Halide ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Halide Perovskites ◽  
Commercial Applications ◽  
Copper Halides ◽  
Down Conversion

As a newly-emerging candidate for solid-state phosphors, metal-halide perovskites have attracted intensive attention in the field of white light-emitting devices (WLEDs) recently. However, their further commercial applications are severely hampered...

Lead-Free Metal Halide Perovskite Nanocrystals for Photocatalysis in Water

2019 ◽  
Author(s):  
Subhajit Bhattacharjee ◽  
Sonu Pratap Chaudhary ◽  
Sayan Bhattacharyya
Keyword(s):  
Charge Carrier ◽  
Wide Spectrum ◽  
Real Life ◽  
Metal Halide ◽  
Lead Free ◽  
Water Medium ◽  
Type I ◽  
Type Ii ◽  
Perovskite Layer ◽  
Halide Perovskites

<p>Metal halide perovskites with high absorption coefficient, direct generation of free charge carriers, excellent ambipolar charge carrier transport properties, point-defect tolerance, compositional versatility and solution processability are potentially transforming the photovoltaics and optoelectronics industries. However their limited ambient stability, particularly those of iodide perovskites, obscures their use as photocatalysts especially in aqueous medium. In an unprecedented approach we have exploited the photo-absorption property of the less toxic lead-free Cs<sub>3</sub>Bi<sub>2</sub>X<sub>9 </sub>(X = Br, I) nanocrystals (NCs) to catalyse the degradation of water pollutant organic dye, methylene blue (MB) in presence of visible light at room temperature. After providing a proof-of-concept with bromide perovskites in isopropanol, the perovskites are employed as photocatalysts in water medium by designing perovskite/Ag<sub>2</sub>S and perovskite/TiO<sub>2 </sub>composite systems, with Type I (or quasi Type II) and Type II alignments, respectively. Ag<sub>2</sub>S and TiO<sub>2</sub> coatings decelerate penetration of water into the perovskite layer while facilitating charge carrier extraction. With a minimal NC loading, Cs<sub>3</sub>Bi<sub>2</sub>I<sub>9</sub>/Ag<sub>2</sub>S degrades ~90% MB within an hour. Our approach has the potential to unravel the photocatalytic properties of metal halide perovskites for a wide spectrum of real-life applications. </p>

Epitaxial Metal Halide Perovskites by InkJet Printing

2019 ◽  
Author(s):  
Mykhailo Sytnyk ◽  
Ole Lytken ◽  
Tim Freund ◽  
Wolfgang Heiss ◽  
Christina Harreiss ◽  
...  
Keyword(s):  
Inkjet Printing ◽  
Metal Halide ◽  
Halide Perovskites
Sign in / Sign up

Export Citation Format

Share Document